Add image/pdf upload option in registration page

Hello,
recently there is no option to upload customer image while registration. How can I add image upload field in registration page?

Please help.
Thanks in advance.

I can't say for certain why it is not available now for customers to upload avatars at the time of registration, but I personally think it's wise. Particularly for those admins who have the registration method set to "must be approved"...you can't really trust people to upload files these days...it becomes a target of "bots" to upload files

...so by making it only possible for registered customers to upload, then you at least prevent bots from uploading scripts or other filetypes.